中国物理B ›› 2006, Vol. 15 ›› Issue (11): 2623-2630.doi: 10.1088/1009-1963/15/11/028

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Surface second harmonic generation of chiral molecules using three-coupled-oscillator model

王晓鸥, 李淳飞, 李俊庆   

  1. Department of Physics, Harbin Institute of Technology, Harbin 150001, China
  • 收稿日期:2005-12-24 修回日期:2006-07-07 出版日期:2006-11-20 发布日期:2006-11-20
  • 基金资助:
    Project supported by the Natural Science Foundation of Heilongjiang Province, China (Grant No~A200406).

Surface second harmonic generation of chiral molecules using three-coupled-oscillator model

Wang Xiao-Ou(王晓鸥)†, Li Chun-Fei(李淳飞), and Li Jun-Qing(李俊庆)   

  1. Department of Physics, Harbin Institute of Technology, Harbin 150001, China
  • Received:2005-12-24 Revised:2006-07-07 Online:2006-11-20 Published:2006-11-20
  • Supported by:
    Project supported by the Natural Science Foundation of Heilongjiang Province, China (Grant No~A200406).

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摘要： Based on the three-coupled-oscillator molecular model we proposed, the relation between the second-order susceptibilities of a chiral film and the molecular hyperpolarizabilities is given. The effect of microscopic parameters on the second-order susceptibilities is simulated numerically and the difference between the efficiencies of s-polarized second-harmonic fields induced by the left- and the right-handed circularly-polarized fundamental beams is discussed. The theoretical basis for studying second-order nonlinear optical properties of the chiral molecular media with a tripod-like structure is provided in this paper.

关键词: molecular chirality, three-coupled-oscillator model, second-order susceptibility, second-\\ \hspace*{1.9cm} harmonic generation

Abstract: Based on the three-coupled-oscillator molecular model we proposed, the relation between the second-order susceptibilities of a chiral film and the molecular hyperpolarizabilities is given. The effect of microscopic parameters on the second-order susceptibilities is simulated numerically and the difference between the efficiencies of s-polarized second-harmonic fields induced by the left- and the right-handed circularly-polarized fundamental beams is discussed. The theoretical basis for studying second-order nonlinear optical properties of the chiral molecular media with a tripod-like structure is provided in this paper.

Key words: molecular chirality, three-coupled-oscillator model, second-order susceptibility, second-harmonic generation

中图分类号:  (Frequency conversion; harmonic generation, including higher-order harmonic generation)

  • 42.65.Ky
33.55.+b (Optical activity and dichroism) 42.65.An (Optical susceptibility, hyperpolarizability)